[FEATURE] Allow to define backend module labels individually

Instead of referencing a language file, which has to
contain three labels with predefined names, such  as
"mlang_labels_tabdescr", it's now also possible to
configure the module title, description and short
description individually.

Resolves: #96799
Related: #96733
Releases: main
Change-Id: I6fbe015fd18c6440a4bb0b49a5020045e08cf90e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73369


Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>